<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>上机作业</title>
    <style>
        h1 {
            width: 300;
            height: 200;
            background-color: orange;
            text-align: center;
            line-height: 200px;
            margin: 100px;
            font-size: 22px;
            color: white;
            border: 50px solid #f0f0f0;
            margin: 165 auto;
        }
    </style>
</head>

<body>
    <script src="./h1.html"></script>
</body>

</html>